/* $NetBSD: prompt.c,v 1.4.6.1 2020/01/26 11:21:58 martin Exp $ */ /* * Copyright (c) 1996, 1997 * Matthias Drochner. All rights reserved. * Copyright (c) 1996, 1997 * Perry E. Metzger. All rights reserved. * Copyright (c) 1997 * Jason R. Thorpe. All rights reserved * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. All advertising materials mentioning features or use of this software * must display the following acknowledgements: * This product includes software developed for the NetBSD Project * by Matthias Drochner. * This product includes software developed for the NetBSD Project * by Perry E. Metzger. * 4. The names of the authors may not be used to endorse or promote products * derived from this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */ #include "efiboot.h" #include #define POLL_FREQ 10 char * gettrailer(char *arg) { char *options; for (options = arg; *options; options++) { switch (*options) { case ' ': case '\t': *options++ = '\0'; break; default: continue; } break; } if (*options == '\0') return options; /* trim leading blanks/tabs */ while (*options == ' ' || *options == '\t') options++; return options; } char awaitkey(int timeout, int tell) { int i = timeout * POLL_FREQ; int last_secs = -1, secs; int last_len = -1, n; char buf[32]; char c = 0; for (;;) { if (tell) { int len; secs = (i + POLL_FREQ - 1) / POLL_FREQ; if (secs != last_secs) { if (last_len != -1) { char *p = buf; for (n = 0; n < last_len; n++) *p++ = '\b'; *p = '\0'; printf("%s", buf); } len = snprintf(buf, sizeof(buf), "%d seconds. ", (i + POLL_FREQ - 1) / POLL_FREQ); if (len > 0 && len < sizeof(buf)) printf("%s", buf); last_len = len; last_secs = secs; } } if (ischar()) { c = getchar(); if (c == 0) c = -1; goto out; } if (--i > 0) { efi_delay(1000000 / POLL_FREQ); } else { break; } } out: if (tell) { if (last_len != -1) { char *p = buf; for (n = 0; n < last_len; n++) *p++ = '\b'; *p = '\0'; printf("%s", buf); } printf("0 seconds. \n"); } return c; } void docommand(char *arg) { char *options; int i; options = gettrailer(arg); for (i = 0; commands[i].c_name != NULL; i++) { if (strcmp(arg, commands[i].c_name) == 0) { (*commands[i].c_fn)(options); return; } } printf("unknown command\n"); command_help(NULL); } __dead void bootprompt(void) { char input[80]; for (;;) { char *c = input; input[0] = '\0'; printf("> "); kgets(input, sizeof(input)); /* * Skip leading whitespace. */ while (*c == ' ') c++; if (*c) docommand(c); } }